The circuit model for a practical capacitor is shown in the

The circuit model for a practical capacitor is shown in the figure. It accountsfor several parasitic effects that are indicated by the presence of resistive and inductivecircuit elements connected to the ideal capacitor C. Label each of these components andinclude a short statement about what effect it represents.

Solution

In an ideal capacitor the input is equal to the output but practically we have the energy dissipation in the capacitor that is represented as a SERIES RESISTANCE nothing but dissipation of energy

Generally for higher frequencies the capacitance cannot react ideally Xc= 1/jwc=1/j2*pi*f*C but it reacts ideally. This effect can be reduced by the series inductance inbuilt effect in practical capacitor , to make a balanced mode

In ideal capacitor the dielectric plates doesn\'t allow any current it only charges but there is some leakage current is present that is represented as the parallel resistance such that it is the representation for the energy dissipation for leakage